HEATKEYS

HashCalc - Fast calculator to compute hash, checksum, HMAC values for file, text and hex string. Supports MD2,MD4,MD5, SHA1,SHA2, RIPEMD160,PANAMA,TIGER, CRC32,ADLER32 algorithms and the hash used in eMule/eDonkey(eDonkey2000,ed2k). Good to check/com...

FileFormat.Info is the source for file format standards, online file conversions, and detailed file specifications, including Unicode characters, MIME types and file extensions

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

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Software hash calculator to compute hash values of multiple files

SANS Internet Storm Center - A global cooperative cyber threat / internet security monitor and alert system. Featuring daily handler diaries with summarizing and analyzing new threats to networks and internet security events.

A library of over 500,000 free and free-to-try software programs for Windows, Unix/Linux, Mac, Mobile Phones, Games and Drivers and an up-to-date news and reviews section focused on IT subjects

Infosec Research portal for Reverse Engineering, Cryptography, Anti-Spyware and Password Recovery Tools.

Unique collection of freeware desktop utilities, system utilities, password recovery tools, components, and free source code examples

WinMD5 is a freeware for Windows to allow user to calculate MD5 hash or checksum for files, and verify a download.